docs: def list_volume_schedules(self, volume_id):
          """Lists schedules for a given volume
  
          :param integer volume_id: The id of the volume
          :return: Returns list of schedules assigned to a given volume
          """
          volume_detail = self.client.call(
              'Network_Storage',
              'getObject',
              id=volume_id,
              mask='schedules[type,properties[type]]')
  
          return utils.lookup(volume_detail, 'schedules')